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How to prevent buttons from submitting forms
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You're using an HTML5 button element. Remember the reason is this button has a default behavior of submit, as stated in the W3 specification as seen here:
W3C HTML5 Button
So you need to specify its type explicitly:
<button type="button"&...
Handle file download from ajax post
...createObjectURL(blob);
if (filename) {
// use HTML5 a[download] attribute to specify filename
var a = document.createElement("a");
// safari doesn't support this yet
if (typeof a.download === 'undefined') {
...
How is the default submit button on an HTML form determined?
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HTML 4 does not make it explicit. The current HTML5 working draft specifies that the first submit button must be the default:
A form element's default button is the
first submit button in
tree order whose form owner is that
form element.
If the user ...
Differences between .NET 4.0 and .NET 4.5 in High level in .NET
...hat houses many platforms and languages, including .NET Framework, C++ and HTML5/JavaScript.
2. Core Features
Ability to limit how long the regular expression engine will attempt
to resolve a regular expression before it times out.
Ability to define the culture for an application domain.
Console...
Show an image preview before upload
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HTML5 comes with File API spec, which allows you to create applications that let the user interact with files locally; That means you can load files and render them in the browser without actually having to upload the files. ...
Fastest exit strategy for a Panic Button in Crisis/Abuse Websites? [closed]
...ify your browser history. window.history.replaceState (link to docs) is an HTML5 feature that can modify your history without doing a page reload or a request to your server. It's pretty fast but only works on modern browsers. When the user clicks the panic button, we will replace the current page i...
Including Google Web Fonts link or import?
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The Web Fonts API is very useful when working with HTML5 Canvas. You can't use a font that hasn't finished loading before drawing text with it, and of course once the font is loaded it isn't automatically updated. Relatedly, the API is needed for tracking progress of loading ...
Are SVG parameters such as 'xmlns' and 'version' needed?
...in HTML documents is a fairly recent innovation that came along as part of HTML5.
If however you serve your page as image/svg+xml or application/xhtml+xml or any other MIME type that causes the user agent to use an XML parser then the xmlns attributes are required. This was the only way to do thing...
Using tags in the with other HTML
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The scoped attribute has been removed from current HTML5 specifications.
– Albert Wiersch
Sep 27 '16 at 16:40
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show...
Do DOM tree elements with ids become global variables?
...ously-IE-only practice of putting them on window are being standardised by HTML5, whose approach is to document and standardise every terrible practice inflicted on us by browser authors, making them part of the web forever. So Firefox 4 will also support this.
What are ‘named elements’? Anythi...